I decided to start modeling up some sort of basic idea of what i want my building to do and be like so i can start developing ideas. Decided to quickly sketchup the basic shape and idea of how my transport hub will become a parasite on the bridge offering on and off tunnels for busses and a city cat stop.... possibly another underground connection to new infrastructure connecting the valley and city etc.

Obviously its not to scale as it seems a lot bigger then i first anticipated, but you get the jist of it. The stuff i posted before would be the scultpuiral aspect of the tunnels to create interesting rhythms as you travel through them.